Trillion dollar debt?

I am sitting at a conference where the analogy was given to us about how large is a trillion dollars.  A trillion dollars is too large for the most of us to understand.  So lets think about it this way.  If a person makes $50,000 a year it would take 20 years to make a million dollars.

If a person makes $50,000 a year it would take 20,000 years to make a billion dollars.

It would take 20,000,000, that's 20 million years at $50,000 a year to make a trillion dollars.

Think about how many generations will be in debt with a national debt of more than a trillion dollars.